Home / 678,559.68-1,017,540.63-318,832.88

Finding the Fourth Proportional to 678,559.68, 1,017,540.63 and 318,832.88

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Solution

The fourth proportional to 678,559.68, 1,017,540.63 and 318,832.88 is: 478,108.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,559.68 : 1,017,540.63 = 318,832.88 : x
  2. Step 2: Convert to fraction form
    678,559.68/1,017,540.63 = 318,832.88/x
  3. Step 3: Cross multiply
    678,559.68x = 1,017,540.63 × 318,832.88
  4. Step 4: Simplify right side
    678,559.68x = 324,425,404,492.21
  5. Step 5: Solve for x
    x = 324,425,404,492.21/678,559.68
  6. Step 6: Final answer
    x = 478,108.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.